document.write( "Question 179510: Solve using the square root property:\r
\n" ); document.write( "\n" ); document.write( "1. 2x^2=40\r
\n" ); document.write( "\n" ); document.write( "2. (x+3)^2=49\r
\n" ); document.write( "\n" ); document.write( "Thank you ;) \n" ); document.write( "

Algebra.Com's Answer #134455 by jim_thompson5910(35256) $\"\"$ $\"About$

You can put this solution on YOUR website!
# 1\r
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\n" ); document.write( "\n" ); document.write( " $\"2x%5E2=40\"$ Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( " $\"x%5E2=%2840%29%2F%282%29\"$ Divide both sides by $\"2\"$ .\r
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\n" ); document.write( "\n" ); document.write( " $\"x%5E2=20\"$ Reduce.\r
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\n" ); document.write( "\n" ); document.write( " $\"x=0%2B-sqrt%2820%29\"$ Take the square root of both sides.\r
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\n" ); document.write( "\n" ); document.write( " $\"x=sqrt%2820%29\"$ or $\"x=-sqrt%2820%29\"$ Break up the \"plus/minus\" to form two equations.\r
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\n" ); document.write( "\n" ); document.write( " $\"x=2%2Asqrt%285%29\"$ or $\"x=-2%2Asqrt%285%29\"$ Simplify the square root.\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
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\n" ); document.write( "\n" ); document.write( "So the solutions are $\"x=2%2Asqrt%285%29\"$ or $\"x=-2%2Asqrt%285%29\"$ .\r
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\n" ); document.write( "\n" ); document.write( "# 2\r
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\n" ); document.write( "\n" ); document.write( " $\"%28x%2B3%29%5E2=49\"$ Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( " $\"x%2B3=0%2B-sqrt%2849%29\"$ Take the square root of both sides.\r
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\n" ); document.write( "\n" ); document.write( " $\"x%2B3=sqrt%2849%29\"$ or $\"x%2B3=-sqrt%2849%29\"$ Break up the \"plus/minus\" to form two equations.\r
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\n" ); document.write( "\n" ); document.write( " $\"x%2B3=7\"$ or $\"x%2B3=-7\"$ Take the square root of $\"49\"$ to get $\"7\"$ .\r
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\n" ); document.write( "\n" ); document.write( " $\"x=-3%2B7\"$ or $\"x=-3-7\"$ Subtract $\"3\"$ from both sides.\r
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\n" ); document.write( "\n" ); document.write( " $\"x=4\"$ or $\"x=-10\"$ Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
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\n" ); document.write( "\n" ); document.write( "So the solutions are $\"x=4\"$ or $\"x=-10\"$ .
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